[KNOWAGE-9908] implement top level likeSelections in dashboard export

(cherry picked from commit e82fa4a)

Author: eng-dedalus

knowage-export/src/main/java/it/eng/knowage/engine/api/export/dashboard/DashboardExporter.java

@@ -878,14 +878,15 @@ public JSONObject getDataStoreForDashboardWidget(JSONObject widget, int offset,
             dashboardSelections.put("selections", effectiveSelections);
             dashboardSelections.put("parameters", parameters);
             dashboardSelections.put("drivers", drivers);
+            addWidgetLikeSelections(dashboardSelections, widget);
 
             if (isSolrDataset(dataset) && !widget.getString("type").equalsIgnoreCase("discovery")) {
                 JSONObject jsOptions = new JSONObject();
                 jsOptions.put("solrFacetPivot", true);
                 dashboardSelections.put("options", jsOptions);
             }
 
-            if (isSolrDataset(dataset) && widget.getString("type").equalsIgnoreCase("discovery")) {
+            if (!dashboardSelections.has("likeSelections") && isSolrDataset(dataset) && widget.getString("type").equalsIgnoreCase("discovery")) {
                 buildLikeSelections(dashboardSelections, widget);
             }
 
@@ -1080,6 +1081,13 @@ protected boolean isSolrDataset(IDataSet dataSet) {
         return dataSet instanceof SolrDataSet;
     }
 
+    protected void addWidgetLikeSelections(JSONObject dashboardSelections, JSONObject widget) throws JSONException {
+        JSONObject likeSelections = widget.optJSONObject("likeSelections");
+        if (likeSelections != null && likeSelections.length() > 0) {
+            dashboardSelections.put("likeSelections", new JSONObject(likeSelections.toString()));
+        }
+    }
+
     private void buildLikeSelections(JSONObject dashboardSelections, JSONObject widget) {
         try {
             JSONObject likeSelections = new JSONObject();

knowage-export/src/test/java/it/eng/knowage/engine/api/export/dashboard/DashboardExporterTest.java

@@ -7,9 +7,30 @@
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
 
 public class DashboardExporterTest {
 
+    private static class TestableDashboardExporter extends DashboardExporter {
+
+        private TestableDashboardExporter() {
+            super("test-user", null);
+        }
+
+        @Override
+        protected String getInternationalizedHeader(String columnName) {
+            return columnName;
+        }
+
+        private String resolveColumnDisplayName(JSONObject settings, JSONObject column, JSONArray variables) throws JSONException {
+            return getDashboardColumnDisplayName(settings, column, variables);
+        }
+
+        private void copyWidgetLikeSelections(JSONObject dashboardSelections, JSONObject widget) throws JSONException {
+            addWidgetLikeSelections(dashboardSelections, widget);
+        }
+    }
+
     @Test
     public void shouldPreserveOrderBySummaryPathInPivotAggregations() throws JSONException {
         DashboardExporter exporter = new DashboardExporter("test-user", null);
@@ -101,4 +122,69 @@ public void shouldPreserveRowSummaryPathWhenSortingPivotColumns() throws JSONExc
         assertFalse(categories.getJSONObject(1).has("orderBySummaryPath"));
         assertFalse(categories.getJSONObject(2).has("orderBySummaryPath"));
     }
+
+    @Test
+    public void shouldResolveVariablePlaceholderInCustomHeaderLabel() throws JSONException {
+        TestableDashboardExporter exporter = new TestableDashboardExporter();
+
+        JSONObject settings = new JSONObject()
+                .put("configuration", new JSONObject()
+                        .put("headers", new JSONObject()
+                                .put("custom", new JSONObject()
+                                        .put("enabled", true)
+                                        .put("rules", new JSONArray()
+                                                .put(new JSONObject()
+                                                        .put("action", "setLabel")
+                                                        .put("value", "$V{QQ}")
+                                                        .put("target", new JSONArray().put("quarter-column")))))));
+        JSONObject column = new JSONObject()
+                .put("id", "quarter-column")
+                .put("alias", "Quarter");
+        JSONArray variables = new JSONArray()
+                .put(new JSONObject()
+                        .put("name", "QQ")
+                        .put("value", "Q1 2026"));
+
+        assertEquals("Q1 2026", exporter.resolveColumnDisplayName(settings, column, variables));
+    }
+
+    @Test
+    public void shouldResolveDirectVariableNameInCustomHeaderLabel() throws JSONException {
+        TestableDashboardExporter exporter = new TestableDashboardExporter();
+
+        JSONObject settings = new JSONObject()
+                .put("configuration", new JSONObject()
+                        .put("headers", new JSONObject()
+                                .put("custom", new JSONObject()
+                                        .put("enabled", true)
+                                        .put("rules", new JSONArray()
+                                                .put(new JSONObject()
+                                                        .put("action", "setLabel")
+                                                        .put("value", "QQ")
+                                                        .put("target", new JSONArray().put("quarter-column")))))));
+        JSONObject column = new JSONObject()
+                .put("id", "quarter-column")
+                .put("alias", "Quarter");
+        JSONArray variables = new JSONArray()
+                .put(new JSONObject()
+                        .put("name", "QQ")
+                        .put("value", "Q1 2026"));
+
+        assertEquals("Q1 2026", exporter.resolveColumnDisplayName(settings, column, variables));
+    }
+
+    @Test
+    public void shouldCopyIncomingWidgetLikeSelections() throws JSONException {
+        TestableDashboardExporter exporter = new TestableDashboardExporter();
+        JSONObject dashboardSelections = new JSONObject();
+        JSONObject widget = new JSONObject()
+                .put("likeSelections", new JSONObject()
+                        .put("sales", new JSONObject()
+                                .put("COUNTRY,REGION", "it")));
+
+        exporter.copyWidgetLikeSelections(dashboardSelections, widget);
+
+        assertTrue(dashboardSelections.has("likeSelections"));
+        assertEquals("it", dashboardSelections.getJSONObject("likeSelections").getJSONObject("sales").getString("COUNTRY,REGION"));
+    }
 }